redisrpc/string.go

package redisrpc

import (
	"github.com/golang/protobuf/proto"
)

/**
 * 使用用户名查询
 */
func GetString(key string, url ...string) (string, error) {

	conn, _, err := Conn(url...)

	if err != nil {
		return "", err
	}
	defer conn.Close()

	req := &GetRequest{proto.String(key), nil}

	res := &GetStringResponse{}

	err = conn.Get(req, res)

	if err != nil {
		return "", err
	}

	return res.GetValue(), nil
}

//设置
func Set(key, value string, ttl int64, url ...string) (string, error) {

	conn, _, err := Conn(url...)

	if err != nil {
		return "", err
	}
	defer conn.Close()

	req := &SetRequest{proto.String(key), proto.String(value), proto.Int64(ttl), nil}

	res := &SetResponse{}

	err = conn.Set(req, res)

	if err != nil {
		return "", err
	}

	return res.GetRet(), nil
}

//删除
func Del(key string, url ...string) (int64, error) {

	conn, _, err := Conn(url...)

	if err != nil {
		return 0, err
	}
	defer conn.Close()

	req := &DelRequest{proto.String(key), nil}

	res := &DelResponse{}

	err = conn.Del(req, res)

	if err != nil {
		return 0, err
	}

	return res.GetRet(), nil
}

func Exists(key string, url ...string)(int64, error){
	conn, _, err := Conn(url...)

	if err != nil {
		return 0, err
	}
	defer conn.Close()

	req := &GetRequest{proto.String(key), nil}

	res := &DelResponse{}

	err = conn.Exists(req, res)

	if err != nil {
		return 0, err
	}

	return res.GetRet(), nil
}


//设置如果不存在
func SetNx(key, value string, ttl int64, url ...string) (int64, error) {

	conn, _, err := Conn(url...)

	if err != nil {
		return 0, err
	}
	defer conn.Close()

	req := &SetRequest{proto.String(key), proto.String(value), proto.Int64(ttl), nil}

	res := &DelResponse{}

	err = conn.SetNx(req, res)

	if err != nil {
		return 0, err
	}

	return res.GetRet(), nil
}